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notsponge [240]
3 years ago
14

Solve: A = 4pir2 for r.

Mathematics
1 answer:
Airida [17]3 years ago
5 0
 <span>r means radius so it can't be negative. 

<=> 

A = 4 pi r² 

r = sqr (A / 4pi) 
</span>
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Explain in detail how to add and regroup 28+5
jolli1 [7]
This is simple. If you add 5 and 8 together, you get 13. What you do, is add the 1 to the 2, you get 3. The 3 in the 13 stays the same, so the awnser is 33.
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3 years ago
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if someone wants to buy something that costs $750.000 and it’s 35% off, how much does it costs after the discount?
Serggg [28]

Answer:487.5

Step-by-step explanation:

if it is a 35% discount it means you are trying to find 65% of the number because 65+35=100%

to find 65%, you find 5% first, then multiply by 13 to get 65%.

to find 5%, you divide by 20.

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2 years ago
1) How many bows can you make from 16 meters of ribbon if 1/2 of a meter of ribbon makes one bow?
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Answer:

1) you can make 32 bows

2) a. 16 b.8

Step-by-step explanation:

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2)if you divide 8 by 0.5 you get 16 and if you divide 4 by 0.5 you get 8

3 0
3 years ago
What are the missing numbers for this ratio table
IrinaVladis [17]

Answer:

  • y = 8
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Step-by-step explanation:

The ratios of the numbers shown in the table are all ...

  y/x = 16/4 = 20/5 = 4

Then the missing y-value is ...

  y = 4x

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And the missing x-value is ...

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<em>Additional comment</em>

The x- and y-values in a "ratio table" are proportional to each other. That means the y corresponding to half an x-value will be half the y-value. In other words, the y for x=2 will be half the y for x=4, or 16/2 = 8.

Also, the values add. We notice that y=36 is the sum of y=16 and y=20. This means the corresponding x-value for y=36 will be the sum of x=4 and x=5, or x = 4+5 = 9.

4 0
2 years ago
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Y - 5 <= -8
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answer

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3 years ago
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